小编Jos*_*ond的帖子

我一直试图找出如何做一个星期,并一直无法做到这一点.我的html导航栏看起来像这样.

<div class="maincontainer">
<!--Navbar-->
<div data-spy="affix" data-offset-top="60" data-offset-bottom="200">
  <div class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">
        <div class="navbar-header" >
                        <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">Pixoweb</a>
        </div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav navbar-right">
                <li class="active"><a href="#">Home</a></li>
                <li><a href="#">About</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Examples<b class="caret"></b></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">Example 1</a></li>
                        <li><a href="#">Example 2</a></li>
                        <li><a href="#">Example 3</a></li>
                        <li><a href="#">Example 4</a></li>
                    </ul>
                </li>
                <li><a href="#contact" data-toggle="modal">Contact</a></li>
            </ul>
        </div>
    </div>
</div>

JS …